/* Copyright (C) 2004 - 2006  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
namespace Db4objects.Db4o.Internal.CS.Messages
{
	public class MReadBlob : Db4objects.Db4o.Internal.CS.Messages.MsgBlob
	{
		public override void ProcessClient(Db4objects.Db4o.Foundation.Network.ISocket4 sock
			)
		{
			Db4objects.Db4o.Internal.CS.Messages.Msg message = Db4objects.Db4o.Internal.CS.Messages.Msg
				.ReadMessage(Transaction(), sock);
			if (message.Equals(Db4objects.Db4o.Internal.CS.Messages.Msg.LENGTH))
			{
				try
				{
					_currentByte = 0;
					_length = message.PayLoad().ReadInt();
					_blob.GetStatusFrom(this);
					_blob.SetStatus(Db4objects.Db4o.Ext.Status.PROCESSING);
					Copy(sock, this._blob.GetClientOutputStream(), _length, true);
					message = Db4objects.Db4o.Internal.CS.Messages.Msg.ReadMessage(Transaction(), sock
						);
					if (message.Equals(Db4objects.Db4o.Internal.CS.Messages.Msg.OK))
					{
						this._blob.SetStatus(Db4objects.Db4o.Ext.Status.COMPLETED);
					}
					else
					{
						this._blob.SetStatus(Db4objects.Db4o.Ext.Status.ERROR);
					}
				}
				catch
				{
				}
			}
			else
			{
				if (message.Equals(Db4objects.Db4o.Internal.CS.Messages.Msg.ERROR))
				{
					this._blob.SetStatus(Db4objects.Db4o.Ext.Status.ERROR);
				}
			}
		}

		public override bool ProcessAtServer(Db4objects.Db4o.Internal.CS.ServerMessageDispatcher
			 serverThread)
		{
			Db4objects.Db4o.Internal.ObjectContainerBase stream = Stream();
			try
			{
				Db4objects.Db4o.Internal.BlobImpl blobImpl = this.ServerGetBlobImpl();
				if (blobImpl != null)
				{
					blobImpl.SetTrans(Transaction());
					Sharpen.IO.File file = blobImpl.ServerFile(null, false);
					int length = (int)file.Length();
					Db4objects.Db4o.Foundation.Network.ISocket4 sock = serverThread.Socket();
					Db4objects.Db4o.Internal.CS.Messages.Msg.LENGTH.GetWriterForInt(Transaction(), length
						).Write(stream, sock);
					Sharpen.IO.FileInputStream fin = new Sharpen.IO.FileInputStream(file);
					Copy(fin, sock, false);
					sock.Flush();
					Db4objects.Db4o.Internal.CS.Messages.Msg.OK.Write(stream, sock);
				}
			}
			catch
			{
				serverThread.Write(Db4objects.Db4o.Internal.CS.Messages.Msg.ERROR);
			}
			return true;
		}
	}
}
